In the first of a two-part feature marking the 30th anniversary of police use of TASER, Policing Insight’s James Sweetland explores the global growth of this tool, what it offers policing, and concerns about racial disproportionality and use in mental health incidents – drawing on interviews with National Police Chiefs’ Council less-lethal weapons lead Chief Constable Lucy D’Orsi, Thames Valley Police and Crime Commissioner Matthew Barber, and others.